1. The measurement and reinforcement of behavior of psychotics;Ayllon;Journal of the Experimental Analysis of Behavior,1965
2. Programmed instruction as an approach to teaching of reading, writing, and arithmetic to retarded children;Bijou;The Psychological Record,1966
3. Classroom behavior of retarded pupils with token reinforcement;Birnbrauer;Journal of Experimental Child Psychology,1965
4. Classroom token systems as technology;Bushell;Educational Technology,1971